Structure design of G+3 commercial building in Nyabugogo Station Kigali Nyarugenge District

Abstract

This dissertation presents a detailed study titled "Architectural and Structural Design of a G+3 commercial Building: Case Study of nyarungenge district" The study focuses on a G+3 commercial building at nyabugogo station that measure 207,775m x 158,64m, comprising essential features like balconies, agency office, restaurant, shops, bus parking, kitchens, bathroom, offices. Each floor stands at a height of 4 m. The structural analysis employed fundamental civil engineering principles to meticulously design key elements, including beams, slabs, columns, foundations, and stairs. Longitudinal beams, with a depth of 500 mm, width of 200 mm, and a flange width of 907 mm, utilized Ø16 mm reinforcement bars at both top and bottom. Slabs were diversified into three types (continuous and discontinuous), each with a 25 cm thickness and reinforced with Ø12 mm bars. Columns incorporated Ø25 mm bars with Ø8 mm links at 144 mm center to center. Foundation design adhered to a bearing capacity (Pb= 350 KN/m2

), resulting in foundations

measuring 1500*1500*500 mm, reinforced primarily with Ø20 mm bars. Stairs facilitating inter- floor access were crafted with a 265 mm going, 180 mm riser, 200 cm flight height, and a pitch of

32.530 . Reinforcement comprised Ø16 mm bars at the bottom and Ø8 mm bars at the top. This dissertation offers a comprehensive exploration of the structural intricacies involved in designing a G+3 commercial building. Through meticulous analysis and design, it provides valuable insights into construction practices, particularly within the unique context of nyarungenge district.